Although few animals and plants are adapted to the extremely dry desert life, the desert is a vital biome.
The Ural Mountains have long been considered the traditional boundary/dividing line between Europe and Asia.
So large that it is often mistaken for a sea, Russia's Lake Baikal is the deepest and oldest lake in the world, and the largest freshwater lake by volume.
The Aral Sea's salinity and volume levels were held stable by inflows of freshwater from the Syr Darya river on the east and the Amu Darya river to the south.
In physical geography, a steppe is an ecoregion, in the montane grasslands and shrublands and temperate grasslands, savannas and shrublands biomes, characterized by grassland plains without trees apart from those near rivers and lakes.